I registered on their site after buying a 5520-24T-PWR on ebay but if you do not have the right profile you are prohibited from downloading. I did find another site that has the software so I got everything released from 2006~2017. My switch came with FW 4.2.0.13, SW 4.2.025 The latest version that explicitly lists 5520-24T-PWR as a supported device in the release notes is v6.3.1. Later version v6.3.6 only lists 5520 w/o the -PWR unsure if i can update to this version, hoping I can.

I am new to all of this but i have read up a bit and obviously just registered on this forum. Am I meant to update the switch incrementally with all 17 versions or can I jump from 4.2.0 -> 6.3.6 (presuming 5520-24T-PWR is supported)?